不同抛光方法对牙科钴铬合金离子析出影响研究-中国实用医学杂志社.PDF

28 ChineseJournalofPracticalStomatology Jan.2014Vol.7No.1 论 著 不同抛光方法对牙科钴铬合金离子析出 影响研究 童新文 ，郑 明 ，程 辉 ，杨 松 ，许才明1 1 1 1 2 文章编号：1674-1595（2014）01-0028-04 中图分类号：Ｒ78 文献标志码：Ａ 摘要：目的 比较不同抛光方法对钴铬合金离子析出的影响。方法 本研究于2013 年3—8 月在福建医科大学 附属口腔医院进行。制作30 个钴铬合金试样，随机分为5 组，分别为砂纸抛光组、镜面抛光组、橡皮轮抛光组、电 解抛光组和化学抛光组，每组6 个试样。根据ISO 10271：2011 标准采用浸泡实验检测试样Co、Cr 离子的析出情 况。检测腐蚀前的表面粗糙度和腐蚀前后表面形貌。结果 镜面抛光组Co、Cr 析出量之和小于橡皮轮抛光组、 电解抛光组和化学抛光组（P 0.05 ）。化学抛光组表面粗糙度最大（P 0.05 ）。化学抛光组Co、Cr 析出量及其总 和均大于砂纸抛光组、镜面抛光组、橡皮轮抛光组、电解抛光组（P 0.05 ）。扫描电镜观察表明，砂纸抛光组、橡皮 轮抛光组、化学抛光组表面有明显的腐蚀痕迹。结论 钴铬合金经镜面抛光可获得最好的表面形貌和抗腐蚀性 能，化学抛光对钴铬合金表面形貌改善不大，其抗腐蚀性能最差。 关键词：钴铬合金；不同抛光方法；表面粗糙度；离子析出 EffectofdifferentpolishingmethodsontheionreleaseofCo-Crdentalalloy. TONGXin-wen*，ZHENG Ming，CHENGHui，YANGSong，XUCai-ming.*DepartmentofProsthodontics，AffiliatedStomatologicalHospital，Fujian MedicalUniversity，Fuzhou350002 ，China Abstract：Objective To evaluate the effect of different polishing methods on ion element release of cobalt-chromium dental alloys. Methods Thirty cobalt-chromium dental alloys specimen were prepared and randomly divided into five groups ，with six specimen in each group. The polishing methods were as follows ：abrasive paper polishing ，mirror polish⁃ ing ，rubber wheel polishing ，electrolytic polishing and chemical polishing. An static immersion method was used in test⁃ ing the ion release of Co ，Cr of specimens. The surface roughness before immersion was tested and scanning electron mi⁃ croscope （SEM）was used to confirm the surface change of test specimens. Results Specimens polished by chemical got the roughest surface （P 0.05 ）. The amount release of Co ，Cr and the summation of five groups had significant difference （P 0.05 ）. SEM results showed that the corrosive marks on the surface of specimens polished by abrasive paper ，rubber wheel ，electrolytic and chemical wer